121140240111 has 96 divisors (see below), whose sum is σ = 204422400000. Its totient is φ = 68404089600.

The previous prime is 121140240079. The next prime is 121140240121. The reversal of 121140240111 is 111042041121.

121140240111 is a `hidden beast` number, since 1 + 211 + 40 + 2 + 401 + 11 = 666.

It is not a de Polignac number, because 121140240111 - 2⁵ = 121140240079 is a prime.

It is a super-3 number, since 3×121140240111³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121140240121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 34619640 + ... + 34623138.

It is an arithmetic number, because the mean of its divisors is an integer number (2129400000).

Almost surely, 2^121140240111 is an apocalyptic number.

121140240111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121140240111 is a deficient number, since it is larger than the sum of its proper divisors (83282159889).

121140240111 is a wasteful number, since it uses less digits than its factorization.

121140240111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965 (or 3962 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121140240111 its reverse (111042041121), we get a palindrome (232182281232).

The spelling of 121140240111 in words is "one hundred twenty-one billion, one hundred forty million, two hundred forty thousand, one hundred eleven".